@RequestMapping("cover")
   public String identifyCover(HttpServletRequest request, HttpServletResponse response)
	  //微信分享授權(quán)開始
    String appId = ;//取項(xiàng)目中配置的公眾號id
    String secret = ;//取項(xiàng)目中配置的公眾號密鑰
    //例如我們有一個(gè)分享的鏈接為：http://test.weixinfwenx.cn/project/fenxiang.do?id=1&name=2;
    //那么domainAddr = http://test.weixinfwenx.cn,這個(gè)可以動態(tài)的配置在項(xiàng)目里，方便測試環(huán)境和生產(chǎn)
    //域名的切換
    String domainAddr = "";//項(xiàng)目中配置的網(wǎng)站的域名
    //這個(gè)取的是鏈接上的參數(shù)，例如在上面的這個(gè)鏈接中，id=1&name=2就是我們要動態(tài)去的參數(shù)，可能有人        
    //會想到，這個(gè)兩個(gè)參數(shù)直接寫在地址中不是挺簡單的為啥還要動態(tài)去獲取這個(gè)參數(shù)呢；在這里我們引出了一       
    //個(gè)微信二次分享的問題，就是別人轉(zhuǎn)發(fā)的鏈接給你，然后你再轉(zhuǎn)發(fā)給別人，在你轉(zhuǎn)發(fā)給別人后這個(gè)鏈接的簽       
    //名就會失敗，為啥呢，因?yàn)榻?jīng)過再次轉(zhuǎn)發(fā)的鏈接，微信會自動加上一些自己的參數(shù)，這樣會導(dǎo)致頁面上微信       
    //分享的鏈接和簽名的鏈接不一致。直接導(dǎo)致自定義的標(biāo)題和鏈接描述，顯示失敗，失敗原因是微信默認(rèn)的在       
    //我們的分享鏈接上加上了&from=singlemessage。
    String str = request.getQueryString();
    Map<String, String> map = new HashMap<String, String>(); 
    map.put("appid", appId); 
    map.put("secret", secret); 
    String url = domainAddr + "/project/fenxiang.do?"+str; map.put("url", url);
    //這個(gè)地址是傳給頁面使用
    request.setAttribute("fenxurl", url);
    //開始微信分享鏈接簽名
    Map<String, String> params = weixinService.weixinjsIntefaceSign(map);
    request.setAttribute("params", params);
    return "自己的頁面";

 public interface weixinService{
	 /**
	  * @Title: weixinjsIntefaceSign
	  * @Description: 微信js接口授權(quán)
	  * @param map
	  * @return
	  * @return: Map<String,String>
	  */
 public Map<String,String> weixinjsIntefaceSign(Map<String,String> map); 

 public class weixinServiceImpl implements weixinService{
	 public Map<String, String> weixinjsIntefaceSign(Map<String, String> map){
		 //查看緩存數(shù)據(jù)是否存在
		 String cacheAccess_token = jedis.get("access_token");
		 String cacheTicket = jedis.get("ticket");
		 //取出來為空的話則說明cacheAccess_token緩存過期，重新獲取
		 if(null == cacheAccess_token){
			 ///////////////////////////////start
			 //獲取cacheAccess_token  
			 //這段代碼實(shí)際開發(fā)過程中要寫成一個(gè)方法，我這里為了演示方便寫在了一起。
			 StringBuffer buffer = new StringBuffer();
			 buffer.append("https://api.weixin.qq.com/cgi-bin/token?");
			 buffer.append("appid="+map.get("appid"));
			 buffer.append("&secret="+map.get("secret"));
			 buffer.append("&grant_type=client_credential");
			 String resultMsg = SendUtils.sendGet(buffer.toString(), "UTF-8");
			 ///////////////////// end
			 
			 JSONObject json = new JSONObject(resultMsg);
			 cacheAccess_token = json.getString("access_token");
			 jedis.set("access_token",cacheAccess_token, "NX", "EX", 3600);//單位是秒
		 }
		 //取出來為空的話則說明cacheTicket緩存過期，重新獲取
		 if(null == cacheTicket){
			 ////////////////////////// start
			 ////獲得jsapi_ticket
			 StringBuffer buffer = new StringBuffer();
			 buffer.append("https://api.weixin.qq.com/cgi-bin/ticket/getticket?");
			 buffer.append("access_token="+access_token);
			 buffer.append("&type=jsapi");
			 String ticket = SendUtils.sendGet(buffer.toString(), "UTF-8");
			 ///////////////////// end
			 
			 JSONObject json2 = new JSONObject(ticket);	  
			 cacheTicket = json2.getString("ticket");
			 jedis.set("ticket",cacheTicket, "NX", "EX", 3600);//單位是秒	
		 }
		 //生成簽名
		 SortedMap<Object,Object> params = new TreeMap<Object,Object>();	    
		 params.put("timestamp", Long.toString(new Date().getTime()/1000));
		 params.put("noncestr", this.CreateNoncestr());
		 params.put("jsapi_ticket",cacheTicket);
		 params.put("url",map.get("url"));//url地址
		 StringBuffer sb = new StringBuffer();
		 Set es = params.entrySet();
		 Iterator it = es.iterator();
		 while(it.hasNext()) {
			 Map.Entry entry = (Map.Entry)it.next();
			 String k = (String)entry.getKey();
			 Object v = entry.getValue();
			 sb.append(k + "=" + v + "&");
		 }
		 String signStr = sb.toString().substring(0, sb.toString().length()-1);
		 String sign = Sha1.getSha1Sign(signStr);//簽名	
		 Map<String, String> result = new HashMap<String,String>();
		 result.put("timestamp",(String)params.get("timestamp"));
		 result.put("noncestr", (String)params.get("noncestr"));
		 result.put("signature", sign);
		 result.put("appId",map.get("appid"));
		 return result;
		 
		 return null;
		 
	 }
    private String CreateNoncestr() {
		String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
		String res = "";
		for (int i = 0; i < 16; i++) {
			Random rd = new Random();
			res += chars.charAt(rd.nextInt(chars.length() - 1));
		}
		return res;
	}
 }

/**
 * 
 * 加密工具類
 *
 */
public class Sha1 {
	 public static String getSha1Sign(String decript) { 
		 try { 
			 MessageDigest digest = java.security.MessageDigest.getInstance("SHA-1"); 
			 try {
				 digest.update(decript.getBytes("UTF-8"));
			 } catch (UnsupportedEncodingException e) {
				 // TODO Auto-generated catch block
				 e.printStackTrace();
			 } 
			 byte messageDigest[] = digest.digest(); 
			 // Create Hex String 
			 StringBuffer hexString = new StringBuffer(); 
			 // 字節(jié)數(shù)組轉(zhuǎn)換為 十六進(jìn)制 數(shù) 
			 for (int i = 0; i < messageDigest.length; i++) { 
				 String shaHex = Integer.toHexString(messageDigest[i] & 0xFF); 
				 if (shaHex.length() < 2) { 
					 hexString.append(0); 
				 } 
				 hexString.append(shaHex); 
			 } 
			 return hexString.toString(); 
			 
		 } catch (NoSuchAlgorithmException e) { 
			 e.printStackTrace(); 
		 } 
		 return ""; 
	 } 
}

/** 
 * http請求工具類
 *
 */
 public class SendUtils {
	 public static String sendGet(String url,String charset){
			//新建客戶端
			HttpClient httpclient = new HttpClient();
			GetMethod getMethod = new GetMethod(url);
			httpclient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, charset);
			httpclient.executeMethod(getMethod);
			String responseMsg = getMethod.getResponseBodyAsString();
			return responseMsg;	
	 }
 }

<script src="https://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>

 wx.config({
				debug: false, 
				appId: '${params.appId}',
				timestamp: '${params.timestamp}',
				nonceStr: '${params.noncestr}', 
				signature:'${params.signature}',
				jsApiList: [
		      'onMenuShareTimeline',
		      'onMenuShareAppMessage',
		      'onMenuShareQQ',
			    'onMenuShareWeibo',
			    'onMenuShareQZone' 
				]
			});
     wx.ready(function(){
			wx.checkJsApi({
			  jsApiList: [
			    'onMenuShareTimeline',
			    'onMenuShareAppMessage',
			    'onMenuShareQQ',
			    'onMenuShareWeibo',
			    'onMenuShareQZone'  
			  ]
			});
				wx.checkJsApi({
				  jsApiList: [
				    'onMenuShareTimeline',
				    'onMenuShareAppMessage',
				    'onMenuShareQQ',
				    'onMenuShareWeibo',
				    'onMenuShareQZone'  
				  ]
				});
			/*分享到朋友圈*/
			wx.onMenuShareTimeline({
			 	title: '計(jì)劃書', // 分享標(biāo)題
			 	desc: '保險(xiǎn)讓生活更美好！', // 分享描述
			  link: '${fenxurl}', // 分享鏈接
			  imgUrl: '${params.urlg}/PF_IDENTIFY/Cacheable/image/business/plan-cover/product_img.png', // 分享圖標(biāo)
			  success: function () { 
			    // 用戶確認(rèn)分享后執(zhí)行的回調(diào)函數(shù)
			  },
			  cancel: function () { 
			    // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
			  }
			});
			/*分享給朋友*/
			wx.onMenuShareAppMessage({
				title: '計(jì)劃書', // 分享標(biāo)題
				desc: '保險(xiǎn)讓生活更美好！', // 分享描述
			  link: '${fenxurl}', // 分享鏈接
			  imgUrl: '${params.urlg}/PF_IDENTIFY/Cacheable/image/business/plan-cover/product_img.png', // 分享圖標(biāo)
			  type: 'link', // 分享類型,music、video或link，不填默認(rèn)為link
			  dataUrl: '', // 如果type是music或video，則要提供數(shù)據(jù)鏈接，默認(rèn)為空
			  success: function () { 
			  	// 用戶確認(rèn)分享后執(zhí)行的回調(diào)函數(shù)
			  	alert("您已分享");
			  },
			  cancel: function () { 
			  	 // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
			  	alert('您已取消分享');
			  }
			});
			wx.onMenuShareQQ({
				title: '計(jì)劃書', // 分享標(biāo)題
				desc: '保險(xiǎn)讓生活更美好！', // 分享描述
			  link: '${fenxurl}', // 分享鏈接
			  imgUrl: '${params.urlg}/PF_IDENTIFY/Cacheable/image/business/plan-cover/product_img.png', // 分享圖標(biāo)
			  success: function () { 
			    // 用戶確認(rèn)分享后執(zhí)行的回調(diào)函數(shù)
			  },
			  cancel: function () { 
			    // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
			  }
			});
			wx.onMenuShareWeibo({
				title: '計(jì)劃書', // 分享標(biāo)題
				desc: '保險(xiǎn)讓生活更美好！', // 分享描述
			  link: '${fenxurl}', // 分享鏈接
			  imgUrl: '${params.urlg}/PF_IDENTIFY/Cacheable/image/business/plan-cover/product_img.png', // 分享圖標(biāo)
			  success: function () { 
			    // 用戶確認(rèn)分享后執(zhí)行的回調(diào)函數(shù)
			  },
			  cancel: function () { 
			    // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
			  }
			});
			wx.onMenuShareQZone({
				title: '計(jì)劃書', // 分享標(biāo)題
				desc: '保險(xiǎn)讓生活更美好！', // 分享描述
			  link: '${fenxurl}', // 分享鏈接
			  imgUrl: '${params.urlg}/PF_IDENTIFY/Cacheable/image/business/plan-cover/product_img.png', // 分享圖標(biāo)
			  success: function () { 
			    // 用戶確認(rèn)分享后執(zhí)行的回調(diào)函數(shù)
			  },
			  cancel: function () { 
			    // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
			  }
			});
		 });